861. The pore size of the filter paper depends on.
A. Nature of the Medium
B. Temperature of the Medium
C. Size of Particles
D. Mass of the particles
862. During the folding of filter paper, the apex forms an angle of about?
A. 800
B. 600
C. 900
D. 1800
863. By using the fluted filter paper, the rate of filtration is _.
A. Increased
B. Decreased
C. Filtration is constant
D. Having no effect
864. Gooch crucible is used for the Filtration of precipitates having.
A. High Solubility
B. High Concentration
C. High Ignition temperature
D. Low temperature
865. Gooch crucible is used to filter the solution of _.
A. H2SO4
B. HCl
C. KMNO4
D. Both B & C
866. Which one is the property of an ideal solvent?
A. Should be expensive
B. It should react chemically with the solute
C. Impurities should crystallize along with the solute
D. Should be safe to use
867. Which one is not usually used for crystallization?
A. Acetone
B. Acetic acid
C. Sulphuric acid
D. Chloroform
868. If the solvent is inflammable for heating purposes we use______.
A. Ice bath
B. Water bath
C. Wire Gauze
D. Thermostat
869. Synthetic detergents are made from?
(A) Sodium stearate
B. Sodium salt of benzene sulfonic acid
(C) Sodium salt of benzene carboxylic acid
(D) Sodium palmitate
870. Philosopher’s Wool is?
(A) Zinc sulphate
(B) Zinc carbonate
C. Zinc oxide
(D) Zinc blende
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